EFFECTS OF FEEDING TWO SOURCES OF RUMEN PROTECTED METHIONINE ON PRODUCTION PERFORMANCE AND BLOOD METABOLITES OF MID LACTATING HOLSTEIN COWS

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ABDOLAHI Y.; DEHGHAN BANADAKY M.; AMANLOU H.; MIRZAEI ALAMOUTI H.R.

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Journal: Iranian Journal of Animal Science Research Year:2012 | Volume:4 | Issue:3 Page(s): 233-239

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Title

EFFECTS OF FEEDING TWO SOURCES OF RUMEN PROTECTED METHIONINE ON PRODUCTION PERFORMANCE AND BLOOD METABOLITES OF MID LACTATING HOLSTEIN COWS

Author(s)

ABDOLAHI Y. | DEHGHAN BANADAKY M. | AMANLOU H. | MIRZAEI ALAMOUTI H.R. | Issue Writer Certificate

Keywords

RUMEN-PROTECTED METHIONINEQ3

HOLSTEIN COWSQ3

PRODUCTION PERFORMANCEQ2

CRUDE PROTEINQ3

Abstract

Fifty-seven Holstein lactating cows in mid-lactation period (milk yield: 33±2.1 kg/d, days in milk: 152±27 d) used in a randomized complete block design with three treatments, two block (parity) and 19 replicate (cow) in each treatment. The hypothesis of present study was "is it possible to decrease the diet CRUDE PROTEIN (CP), through supplementing RUMEN-PROTECTED METHIONINE (RPM), without decrease in productivity or not?" Diets included: 1) 16% of CP with 20 g/d RPM (Methilock); 2) 16% of CP with 12 g/d RPM (Mepron) 3) 17% of CP, without RPM. Milk yield recorded three subsequent days in each weeks and milk samples taken weekly for milk analysis. Daily dry matter intake was measured and cow's body weight was recorded in first and last days of experiment. There were no significant effects of RPM sources (Methilock or Mepron) on milk production.Through treatments, just Methilock caused significant decrease in milk protein percentage, but the other milk compostions were similar. Through blood metabolites only plasma Beta Hydroxi Butiric Acid (BHBA) and Blood Urea Nitrogen (BUN) concentrations were affected by experiment diets. Cows assigned to treatments 1 and 2, had similar feed consumption efficiency like the control group, in regard to that they fed diet with one percentage less CP. In regard to the present result that made by high protein diets, rumen protected methionine supplements can use in mid lactating diet for decrease CP concentration.

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APA: Copy

ABDOLAHI, Y., DEHGHAN BANADAKY, M., AMANLOU, H., & MIRZAEI ALAMOUTI, H.R.. (2012). EFFECTS OF FEEDING TWO SOURCES OF RUMEN PROTECTED METHIONINE ON PRODUCTION PERFORMANCE AND BLOOD METABOLITES OF MID LACTATING HOLSTEIN COWS. IRANIAN JOURNAL OF ANIMAL SCIENCE RESEARCH, 4(3), 233-239. SID. https://sid.ir/paper/218445/en

Vancouver: Copy

ABDOLAHI Y., DEHGHAN BANADAKY M., AMANLOU H., MIRZAEI ALAMOUTI H.R.. EFFECTS OF FEEDING TWO SOURCES OF RUMEN PROTECTED METHIONINE ON PRODUCTION PERFORMANCE AND BLOOD METABOLITES OF MID LACTATING HOLSTEIN COWS. IRANIAN JOURNAL OF ANIMAL SCIENCE RESEARCH[Internet]. 2012;4(3):233-239. Available from: https://sid.ir/paper/218445/en

IEEE: Copy

Y. ABDOLAHI, M. DEHGHAN BANADAKY, H. AMANLOU, and H.R. MIRZAEI ALAMOUTI, “EFFECTS OF FEEDING TWO SOURCES OF RUMEN PROTECTED METHIONINE ON PRODUCTION PERFORMANCE AND BLOOD METABOLITES OF MID LACTATING HOLSTEIN COWS,” IRANIAN JOURNAL OF ANIMAL SCIENCE RESEARCH, vol. 4, no. 3, pp. 233–239, 2012, [Online]. Available: https://sid.ir/paper/218445/en

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