HEADACHES TO HAPPINESS
CROSSBREEDING DAIRY CATTLE
The Prins Dairy, owned by John and Kevin Prins, is located near Oakdale, CA. Our dairy has been in operation since 1971. Today, we milk 570 cows. Cows are grazed in the summer and free stall housed in the winter. All cows are fed a TMR once per day. Prior to the year 2000, our herd was pure Holstein. For the most part the Holstein breed served our operation well. However, as the years went by, frustrations began to increase with fertility and calf survival. The list kept growing! Our local A.I. technician, along with a few other dairymen, came to the conclusion that many of these frustrations were results of inbreeding.
A short time later crossbreeding was in place. In the first years, several different breeds were used, and none ever failed. But as time progressed, some of them would rise to the top as favorites on the basis of type and production. We are now in our seventh year and have had the opportunity to observe the return of numerous functional traits.
Prior to crossbreeding, colostrum was fed by a tube feeder. Many of our calves no longer had the newborn instinct to suck on a nipple, much less get up and find the teat on their own. At present, an estimated 75% of the calves nurse on their own. Because this instinct to nurse has improved so much, it has become more important than ever to keep our close-up cows clean and dry. Colostrum quality has also improved. We have tested colostrum by the use of a BRIX meter and found that the Holsteins will range from 11-16, while the crossbreds will range from 18-25. It appears that this has nothing to do with the volume of colostrum produced. Crossbreds simply have a higher nutrient density in their colostrum. This could be fueled by a stronger immune system in the cow; an outcome of hybrid vigor. Is it any wonder why Holstein calves are recommended as much as 1.5 gallons of colostrum at birth? Based on observation, even our largest calves desire no more than one gallon. This might suggest that many calves, when force fed, receive more volume than their stomach can actually hold. We are sure that we killed calves with the tube feeder in the past.
During the final years with Holstein calves, we experienced a very high stillborn rate. This was especially true in first calf heifers. From a management standpoint we felt like we were doing a good job in watching the close up cows. Currently, our stillborn rate is less than 5%. The number of cows that require assistance to calve has also dropped. We are often amazed that even the larger calves require less assistance. Perhaps they are formed differently than the Holstein calves. It may be that the selection of the Holstein cow to walk “up-hill” has something to do with this. The crossbred cows tend to have more room in the cervix as well.
Our close ups continue to receive a DCAD ration. In the past, there was little room for error in this diet. Today, our crossbred cows transition very well. We have virtually eliminated milk fever. To date, crossbreds do not get Dislocated Abomasums. Calving crossbred cows is very easy. No post calving protocol is used.
The average body condition score is much, much better with our crossbreds. In some cases, this is a result of hybrid vigor while others are the result of certain breeds simply having more body condition. In general, crossbreds are genetically conditioned, not nutritionally conditioned. Therefore, just because a crossbred cow “looks” heavy doesn’t mean she will have health problems related to over conditioning. We find that crossbreds keep much better body condition while they are grazing. Our Holsteins have struggled with body condition; especially while on grass.
Heat detection has always been
done with tail chalk. Over the years more and more hormone shots were
used to keep groups of cows cycling. As crossbred cows started to enter
the herd, fewer and fewer shots were needed. Presently, no shots are used.
In fact, many cows come in heat at less than 3 weeks fresh. Cows cycle
on 21 day intervals thereafter. The “extra” heats that are
exhibited in the early lactation are a big help in finding heats in general.
Because the natural cycle has returned, pregnancy checks go very well.
Cows are pregnancy checked at 40+ days. Once confirmed, no further confirmation
6. Conception Rates.
In a very slow, subtle way, Holstein conception rates dropped to under 30%. This, combined with the inability to cycle, caused huge delays in calving intervals. Our calving interval was previously above 14 months; today with the herd 90% crossbreds it is 12.8 months. As we started to breed Holsteins to other breeds, a slight increase in conception was noticed. Those cows also seemed to have a lower early embryonic death rate as well. A much larger difference was noticed as we started breeding our F-1 cross to a third breed. We now achieve above 45% conception year around. Over all, abortions in our herd are minimal. Reproduction is the number one economic factor on a dairy; not production! If a cow peaks at 140 lbs of milk per day but lacks reproduction, she means nothing to us.
Concrete will always be a challenge to any cow. However, it seems we have fewer lame cows than before. It seems the average hoof is harder in crossbred cows. We select for a straight leg and a steep foot angle. A black hoof is also a desired trait in our program. Unfortunately, we still battle the hairy foot wart.
At the start of our crossbreeding adventure, we recall saying that we were willing to give up some production just to get function back. To our surprise, production has maintained very well. In fact, there is no detectable loss in milk volume. The components appear to rise with each generation. Reproduction is a major factor when looking at our daily tank average. The more fresh cows, the more milk!
Just a few years ago our herd numbers were dropping, as were our replacement numbers. Because crossbreeding has enhanced survival and reproduction so much, 2007 finds us in a surplus of cattle. WARNING: It takes years to climb out of a hole!
Identification is very important when crossbreeding. Every cow and calf in our operation carries her complete (breed) parentage in her ear tag. We must know her past in order the make the best choice for her future. This information is also kept in our office.
We do not use a mating program. Within each breed we select bulls with positive traits for udders. Legs must be straight and the feet steep. Generally, we use the top bulls from each breed.
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