Effects of immunization against GnRH, melengestrol acetate, and a trenbolene acetate/estradiol implant on growth and carcass characteristics of beef heifers

Theriogenology

Volumn 55, Issue 4, 2001, Pages 973-981

  Cook, R B ^a   Popp, J D ^b   McAllister, T A ^a   Kastelic, J P ^a   Harland, R ^c  

^a AGRICULTURE AND AGRI FOOD CANADA   (Canada)

^b GOVERNMENT OF MANITOBA   (Canada)

^c Biostar Inc   (Canada)

Author keywords

Carcass; Estrus suppression; GnRH; Heifer; Trenbolene acetate

Indexed keywords

ANDROGEN; ESTRADIOL; ESTRADIOL BENZOATE; GESTAGEN; GONADORELIN; MELENGESTROL ACETATE; PROGESTERONE; REVALOR H; TESTOSTERONE; TRENBOLONE ACETATE; VACCINE;

ADIPOSE TISSUE; ANIMAL; ANIMAL EXPERIMENT; ANIMAL FOOD; ARTICLE; BODY COMPOSITION; BODY FAT; BODY WEIGHT; CARCASS; CATTLE; CONTROLLED STUDY; COW; CROSS BREEDING; DRUG IMPLANT; ESTRUS; ESTRUS CYCLE; FEMALE; GROWTH; IMMUNIZATION; IMPLANT; MUSCLE GROWTH; NONHUMAN; PROGESTERONE BLOOD LEVEL; SEXUAL BEHAVIOR; SLAUGHTERHOUSE; STATISTICAL MODEL; WEIGHT GAIN;

ADIPOSE TISSUE; ANIMALS; BODY COMPOSITION; BODY WEIGHT; CATTLE; DRUG IMPLANTS; ESTRADIOL; ESTRUS; FEMALE; GONADOTROPIN-RELEASING HORMONE; IMMUNIZATION; LINEAR MODELS; MELENGESTROL ACETATE; PROGESTERONE; PROGESTERONE CONGENERS; SEXUAL BEHAVIOR, ANIMAL; TESTOSTERONE; TESTOSTERONE CONGENERS;

BOVINAE; HORDEUM VULGARE SUBSP. VULGARE;

EID: 0035280865     PISSN: 0093691X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0093-691X(01)00458-7     Document Type: Article

References (23)

1. Reproductive function and feedlot performance of heifers actively immunized against GnRH
2. Feedlot performance of beef heifers implanted with Synovex-H: Effect of melengestrol acetate, ovariectomy or active immunization against GnRH
3. Livestock carcass grading regulations
4. Trenbolene acetate as a growth promotant
5. Trenbolene acetate/estradiol combinations in feedlot steers: Dose-response and implant carrier effects
6. Pregnancy status and feedlot performance of beef heifers actively immunized against gonadotropin-releasing hormone
7. Dry matter, crude protein, and starch degradability of five cereal grains
8. Testosterone, dihydrotestosterone, trenbolene acetate and zeranol alter the synthesis of cortisol in bovine adrenocortical cells
9. Effect of combined trenbolene acetate and estradiol implant on feedlot performance, carcass characteristics and composition of feedlot steers
10. Carcass traits and the occurrence of dark cutters in pregnant and nonpregnant feedlot heifers
11. Effect of steroid implants on sexual behaviour of beef cattle
12. Effect of sequential implanting with Synovex on steer and heifer performance
13. The design, production, purification, and testing of a chimeric antigen protein to be used as an immunosterilant in domestic animals
14. Efficient immunocastration of male piglets by immunoneutralization of GnRH using a new GnRH-like peptide
15. Mode of action of exogenous substances on animal growth - An overview
16. Effect of trenbolene acetate/estradiol implants and estrus suppression on growth performance and carcass characteristics of beef heifers
17. Immunization of heifers against gonadotropin-releasing hormone: Antibody titres, ovarian function, body growth, and carcass characteristics
18. Responses of ram lambs to active immunization against testosterone and luteinizing hormone-releasing hormone
19. Methods for determining dietary fibre, neutral detergent fibre, and nonstarch polysaccharides in relation to animal nutrition
20. Immunization of heifers against gonadotropin-releasing hormone delays puberty and causes the cessation of estrous cycles
21. Safety and pharmacologic evaluations of melengestrol acetate in cattle and other animals: A review