Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
In order to finest see the aftereffect of the newest crossbreeding with the sexual precocity off crossbreed pets, the new AFC is reviewed predicated on: crossbreed kind of, race from sire mothers (bull and you will inseminated local cows), hybridization peak and you will inventory farms
The fresh new imply ages initially calving for everybody breeds built try ± days, representing just as much as 3 years (couple of years eleven weeks 19 days ± eleven weeks a day). Many precocious heifers calved inside 2 yrs ( months). Getting fifty% of heifers, very first calving was at weeks. The first characteristics were held on average on ± weeks ( so you can months).
Brand new mean AFC of the crossbreeds was lower than those people claimed one of several Zebu within the tropics within more than forty weeks reported a number of training ( Rahman ainsi que al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and you will Este Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Some authors possess advertised abilities really alongside the observation towards different crossbreeds from inside the Africa, notwithstanding cow types found in the latest test: 34 months one of the Montbeliard crossbreeds for the Algeria ( Madani and Mouffok, 2008 ) and you may Morocco ( Srairi and Mousili, 2014 ), ± 0.43 months on the Girolando crossbreed during the Benin ( Doko ainsi que al., 2012 ). It had been an equivalent into Holstein-Friesian crossbreed cattle in Ethiopia from the thirty six.cuatro ± step one.7 days, the new Borgou and you can Lagunaire breeds on thirty six.step one ± 6.30 months inside the Benin ( Adamou-Ndiaye ainsi que al., 2003 ) and also in the brand new Azawak Zebu in the thirty six.5 ± cuatro.ten and you can ± thirteen days from inside the Niger ( Achard and you may Chanono, 2006 , 1997 ).
Our very own observation was higher than those said by Genzebu mais aussi al. (2016) certainly one of crossbreed cows inside Kenya (26.nine ± 5.cuatro and 27.0 ± 3.eight months). It was a little a lot better than the findings because of the Ngodigha mais aussi al. (2009) out of 31 https://datingranking.net/es/sitios-de-citas-estadounidenses/.seven ± 2.5 months certainly crossbreeds (Holstein x Bunadji) during the Nigeria, Ben Salem mais aussi al. (2009) out-of 30.seven ± cuatro.one year during the Holstein when you look at the Tunisia and Srairi and you can Mousili (2014) off 31 days for the Montbeliard in the Morocco. Particular variation things of the AFC have been examined to help you attain the statements.
One of the more crossbreeding items identified ( Dining table step 1 ), the new Fulani Zebu (FZ) inseminated with semen out of Montbeliard (MB x FZ) and you will Alps Brownish (Abdominal x FZ) provides produced the absolute most precocious corssbreeds (basic calving in the a couple of years) (5%). If you’re, the brand new inseminations out of Fulani Zebu cattle on sperm of Holstein (HT x FZ) and you will off Tarentaise (T x FZ) then your insemination away from Gudali Zebu cows having sperm out of Montbeliard (MB x GZ) provides brought the new precocious crossbreed cows.
Minimal is weeks as well as the restriction is days
Desk step one: Decades at first calving (months) considering crossbreeding enter in milk cattle facilities in the area away from Bobo-Dioulasso in the Burkina Faso
The research worried about this new breeding monitoring of twenty (20) hybrid cattle due to new interbreeding from artificial insemination between local breed cattle (Gudali Zebu and you may Fulani Zebu) and exotic reproduce bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). These types of crossbreeds were produced ranging from 1999 and you can 2010 and you will provided the earliest calf ranging from 2002 and you can 2012 on the three enhanced stock farms within the metropolitan and suburban aspects of Bobo-Dioulasso. Each one of these farms keeps on 50 hybrid cows inside development. The first farm is located in an urban area, the following ten Km aside at the southern area exit together with third sixty Kilometer aside within eastern log off regarding Bobo-Dioulasso. First surveys anywhere between throughout these parts helped to pick such about three farms that have a livestock check in (heat and you can phony insemination keeping track of sheet sets). Situations associated with private monitoring of animal breeding eg calving schedules, times of your very first warms and you can inseminations was recorded every single day because of the the latest cattlemen while the inseminators. This new exploitation of these files made it you are able to to choose twenty (20) basic calving’s comparable to the initial services. This type of facilities was described as the clear presence of forgotten, an excellent herd fitness monitoring, a led reproduction form (primarily AI, to own lack of a specified bull), the newest focus supplies (cotton fiber pie otherwise cottonseed and you may commercial malt) from the ration giving and you may intense shipment off silage and you may farming because of the factors. Truly the only reason for so it operation sort of ‘s the design and you may selling out-of manually processed milk, twice daily (day and you may evening). The latest centers was offered on the dogs to their come back out-of grazing along with the newest morning during the milking big date.