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.
The mean decades initially calving for everybody breeds assembled was ± weeks, representing everything three-years (2 years 11 days 19 days ± 11 days 24 hours). The minimum was days in addition to limitation was months. More precocious heifers calved inside couple of years ( months). To possess fifty% away from heifers, very first calving is at months. The first features occurred typically during the ± months ( to help you days).
The fresh new indicate AFC of your own crossbreeds are below the individuals said one of several Zebu beneath the tropics during the more 40 days said in lots of training ( Rahman ainsi que al., 2016 ; Tellah ainsi que al., 2015a , 2015b ; Bashir and Este Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Particular people has said show extremely next to our observation into the some other crossbreeds when you look at the Africa, despite cow types used in the try: 34 weeks among the Montbeliard crossbreeds in the Algeria ( Madani and Mouffok, 2008 ) and Morocco ( Srairi and you may Mousili, 2014 real Dog singles dating site review ), ± 0.43 months on Girolando crossbreed from inside the Benin ( Doko et al., 2012 ). It actually was a comparable on Holstein-Friesian hybrid cows during the Ethiopia from the thirty six.4 ± step one.eight months, the brand new Borgou and you will Lagunaire types from the 36.step 1 ± six.29 weeks from inside the Benin ( Adamou-Ndiaye et al., 2003 ) and also in brand new Azawak Zebu within thirty six.5 ± 4.10 and you may ± thirteen months from inside the Niger ( Achard and you can Chanono, 2006 , 1997 ).
Our observance try greater than people reported by the Genzebu ainsi que al. (2016) certainly one of hybrid cows in Kenya (twenty-six.9 ± 5.4 and you can 27.0 ± step three.7 weeks). It actually was a bit much better than the brand new observations because of the Ngodigha et al. (2009) regarding 29.eight ± 2.5 weeks certainly crossbreeds (Holstein x Bunadji) within the Nigeria, Ben Salem et al. (2009) from 31.7 ± cuatro.one year during the Holstein inside the Tunisia and you may Srairi and Mousili (2014) away from 30 days into the Montbeliard for the Morocco.
One of many additional crossbreeding brands understood ( Dining table step 1 ), the new Fulani Zebu (FZ) inseminated that have sperm out of Montbeliard (MB x FZ) and you will Alps Brown (Ab x FZ) have delivered the essential precocious corssbreeds (first calving on couple of years) (5%). When you’re, new inseminations away from Fulani Zebu cattle on the semen off Holstein (HT x FZ) and you may of Tarentaise (T x FZ) then insemination regarding Gudali Zebu cattle which have sperm from Montbeliard (MB x GZ) keeps lead the fresh new precocious hybrid cows.
Certain version activities of AFC have been assessed so you can achieve the comments
Table step 1: Many years initially calving (months) according to crossbreeding type in milk products cows farms in your neighborhood from Bobo-Dioulasso in the Burkina Faso
To finest see the effectation of the newest crossbreeding to the sexual precocity out of crossbreed animals, the newest AFC are assessed considering: hybrid variety of, battle away from sire moms and dads (bull and you may inseminated local cattle), hybridization peak and you may inventory facilities
The study focused on the fresh new reproduction tabs on twenty (20) crossbreed cows as a result of new interbreeding from phony insemination ranging from regional reproduce cattle (Gudali Zebu and you can Fulani Zebu) and you will unique reproduce bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). These types of crossbreeds was in fact created anywhere between 1999 and you will 2010 and offered their earliest calf between 2002 and you can 2012 into about three increased inventory facilities in metropolitan and you can residential district regions of Bobo-Dioulasso. Every one of these facilities features from the fifty hybrid cows from inside the design. The initial farm is situated in a city, the next ten Kilometer out from the southern get off while the third 60 Kilometer aside during the eastern get-off out of Bobo-Dioulasso. First surveys between in these areas aided to pick such three farms having a cattle register (temperature and you can phony insemination keeping track of sheet sets). Situations pertaining to personal monitoring of animal reproduction instance calving schedules, dates of your own earliest heating and you may inseminations was registered every single day of the brand new cattlemen plus the inseminators. The exploitation of them data made it you are able to to determine twenty (20) first calving’s add up to the original attributes. These facilities is actually characterized by the existence of lost, a great herd fitness monitoring, a led reproduction setting (generally AI, to possess not enough a selected bull), the newest focus provides (thread pie or cottonseed and you will commercial malt) throughout the ration feeding and you will intensive delivery off silage and you will agricultural by points. The actual only real function of so it procedure form of ‘s the design and marketing out of yourself canned milk, two times a day (day and you may night). New centers try offered for the animals on their return away from grazing and also in the latest day during the milking day.