Effect Of Fodder Beet And Alfalfa Hay At Different Cutting Time In Diets On The Milk Performance Of Dairv Cattle

Through the test using fodder beet partially substituted for corn silage, using bud stage alfalfa hay and1/3bloom alfalfa hay, research on the effect of using fodder beet and different cutting time of alfalfa hay in diets on dairy production. The experiment was divided into2parts:Forage grass planting test and Dairy cow feeding test.Forage planting test was from April1st,2011to October30th,2011, selecting test in Karamay agricultural comprehensive development zone of Green Company. Among them, alfalfa had6.67hectares, fodder beet had3.33hectares, Green Company followed the key cultivation techniques for planting, adopting the machine which crushed cutting the Algonquin alfalfa. The test main research nutrient of alfalfa hay at different cutting time and fodder beet. The results showed that:Nutrient yield of bud stage alfalfa hay increased by90kg/667m2compared with1/3bloom alfalfa hay, the crude protein (CP) content of bud stage alfalfa hay increased by2.56%, neutral detergent fiber (NDF) content of bud stage alfalfa hay reduced6.32%and acid detergent fiber (ADF) content of bud stage alfalfa hay reduced6.80%compared with1/3bloom alfalfa hay respectively; Dry matter production of fodder beet increased by332kg/667m2compared with corn silage, the crude protein (CP) content of fodder beet increased by6.96%and nitrogen free extract (NFE) content of fodder beet increased by43.86%, neutral detergent fiber (NDF) content reduced49.44%and acid detergent fiber (ADF) content reduced28.97%compared with corn silage. Conclusion:Production and nutritional quality of bud stage better than1/3bloom alfalfa hay; fodder beet is a kind of high production, good nutrient juicy feed.Daily cow feeding test was from November2st,2011to December21st,2011, in the second field of cow attached to Green Company in Karamay. The51cows with similar lactation day, parity, age, weight, milk yield were divided into3groups randomly, the experiment lasted for50days, including7days pre-experiment. Using One-Way ANOVA test design. The control group of combination of diet:every cow feeding20kg com silage+3kg beet pulp+9kg mixed boars+6kg alfalfa (1/3Bloom), Group1of combination of diet:every cow feeding17kg com silage+10kg fodder beet+9kg mixed boars+7kg alfalfa (1/3Bloom), Group2of combination of diet:every cow feeding17kg corn silage+10kg fodder beet+9kg mixed boars+7kg alfalfa (Bud stage). The results showed that:the milk yield of Group1increased by0.12%compared with the control group, the milk yield of Group2increased by2.48%and2.61%compared with Group1and the control group respectively, the diet’s average conversion efficiency of Group2increased by8%compared with the control group, the differences were significant (P<0.05), Group1increased by6.09%compared with the control group and reduced by2.4%compared with Group2.but the differences were not significant (P<0.05); as for milk protein, Group1increased by0.32%, Group2increased by0.31%and0.63%compared with Group1and the control group respectively, the differences were not significant (P>0.05); during change in diet, as for milk fat, the control group dropped8.11%, Group1and Group2increased by8.71%and12.37%respectively, and Group2increased by0.34%compared with Group1, the differences were not significant (P>0.05). Conclusion:Using fodder beet partially substituted for corn silage and using bud stage alfalfa hay in diets can improve milk yield and milk quality of cows.